Vepica Speeds Fractionation Project with CADWorx

The Challenge

Basic Equipment Inc. selected Vepica to design the fractionation facility of a 25,000 BPD Atmospheric Distillation Unit (ADU) in Houston, Texas, US, for processing Crude A (API 38.2°) or Crude B (API 45.8°) in single crude streams or a combination of these two feed stocks.

The facility includes 87 pieces of equipment and 28,500 feet of pipe ranging from 3/4 inch to 24 inches in diameter. The structural steeltotaled 737,400 lbs.

Three Vepica offices in Caracas, Venezuela; Bogota, Colombia; and Houston worked on the project. Effective communication among design teams was paramount to ensure they used the same design procedures to deliver quality results.

The project also required a modular process skid design, raising concerns that valve hand wheels might interfere with adjacent piping. In addition, the client demanded that the last third of the engineering cycle overlap with the fabrication phase of the project, leaving no room for error.

The Solution

“Without CADWorx, costly clashes and interferences were common as were dimensioning and format errors for piping isometrics,” explained Jesus Espiga, piping engineer at Vepica.

These issues often resulted in additional time for rework. And, without a centralized database, there were often errors in bills of material resulting in waste.

The project’s multisite setting required careful management of the central database. With CADWorx,Vepica could synchronize design information from the three offices into one central database server as team members created the 3D model. The company could then automatically produce piping isometrics and accurate material take-offs.

To avoid interferences, Vepica created a report for the client showing valve orientation by extracting supplemental Isogen data. The report enabled the team to eliminate errors during fabrication and reduce operation times.

Vepica used CADWorx to maintain quality control, reduce human error, and achieve faster processing times for reports, drawings, and other client deliverables. The client took advantage of the 3D model for reviews during the fabricationphase of the project.

“With CADWorx, we completed the project in 15 percent less time than our initial estimate,” Espiga added, “and our client was highly satisfied with the quality provided and began using us on other projects.”

Vepica received the 2016 CADWorx Drivers of Success Runner-Up Award for its use of the software. The annual Drivers of Success competition recognizes innovative applications of Hexagon PPM products, impressive project results, and significant benefits from collaboration among disciplines and the integration of the products.


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